| 摘要 |
<p>1. A single-piece rim for a pneumatic tire having a central circumferential groove (3) and comprising two principal bead seats (1), each principal bead seat being extended on the axially outer side by a flange (2) and on the axially inner side by a hump (4), characterized by the fact that, on at least one side of the central circumferential groove (3), (a) the rim comprises an auxiliary bead seat (5) located axially between the central circumferential groove (3) and the hump (4), radially between said groove (3) and the top (40) of said hump (4) said auxiliary bead seat (5) has a circumferential development over an arc of at least 308, (b) the connecting surface between the top (40) of said hump (4) and the side (30) of said groove (3), on the side diametrically opposite said auxiliary bead seat, is inclined towards said groove (5), said inclined connecting surface extending circumferentially over an arc of at least 1208.</p> |
